Solve, finding all solutions in [0, 2?).sin x sin 2x + sin x cos x = cos x
A. 
, ?, 
B. 
, 
, 
C. 0, 
, 
, 
, 
D. 
, 
, 
, 
Answer: D
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Solve the equation.x4 - 4x2 + 3 = 0
A. ±1, ±3
B. ±1, ±2
C. ±1, ±
D. 1, 
Solve the problem.Find the number of games played in a round robin tournament for the given numbers of teams. In a round robin tournament every team plays every other team once.
Look for a pattern. Find the number of games played in a round robin tournament involving n teams. Find the number of games played in a round robin tournament involving 16 teams.
What will be an ideal response?
First rewrite the quadratic function in standard form by completing the square, then find any x-intercepts and any y-intercepts.f(x) = x2 + 18x + 66
Give your answers in exact form.
A. x-intercepts: 9 + 
; y-intercept: -66
B. x-intercepts: -9 - 
and -9 + 
; y-intercept: 66
C. x-intercepts: -18 - 
and -18 + 
; y-intercept: -66
D. x-intercepts: 9 - 
and 9 + 
; y-intercept: 66
Solve the equation using the quadratic formula.3x(x + 1) = 5
A. 4
B. 
C. 
D. 